The EU has been worried that Oracle's acquisition of Sun could end up hurting competition by dampening or killing MySQL's momentum.

But in his letter, Mickos separates MySQL-the-community from MySQL-the-company, arguing that Oracle's takeover cannot hurt the MySQL community: 'Those two meanings of the term "MySQL" stand in a close, mutually beneficial interaction with each other. But, most importantly, this interaction is voluntary and cannot be directly controlled by the vendor.'

In a follow-up interview with CNET, Mickos indicated that he has no financial interest in the matter, but instead argues he 'couldn't live with the fact that [he's] not taking action,' and is 'motivated now by trying to help the employees still at MySQL and Sun, and by an urge to bring rational discussion to the matter.'